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【单选题】
定积分 的值为（）A.
B.
1
C.
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举一反三
【简答题】Jack Ma believes the philosophy of Internet is to __________, while the government wants to control.
【单选题】-- Could I use your dictionary for a while? -- _____.
A.
It's well
B.
It doesn't matter
C.
By all means
D.
I have no idea
【单选题】It is often _____ that an American starts a speech with a joke,while a Japanese has an apology to make. [ ]
A.
say
B.
said
C.
saying
D.
to say
【简答题】While scientists are worried that humans are causing higher temperatures on the Earth, a Maryland man, Ace, thinks we can save the world by spraying（喷射）huge amounts of water into the air. Ace told the...
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